Do not get one of the cheap ones (Walmart 97 cents), get a better grade of one and will last you along time. I bought mine at the discount parts store for $8 and has the dual head for ease of use. Also, look at the pressures you use in your tires. On my motorhome I run 60lbs and the regular car gauges run out at about 50, so be sure to get one that works for your tires.

Milton
is the brand that most of the gas stations or repair garages uses you can find them at any of the auto parts stores NAPA, Carquest, Bumper to bumper they usually have a Milton rack with assessories on them gauges, air hose fittings, etc.

Just my 2 cents worth. I seldom get a really good reading from a tire gauge that has a readout pin. If you don't get a perfect fit on the valve stem you need to push back in and try again many gauges won't give the full reading if the pin is not pushed back in when you try to get a reading.
Got a good one from CW about $22 really works great, flex hose dial gauge and traps the air, lets you read the gauge then release the air. If you don't get a good match on the valve stem just wiggle until you get a fit without air escaping. The unit holds the reading until you release it. Great for old eyes that need things out at arms length.
Eyes not bad -- Arms getting shorter